/*
 * Copyright 2009 Original Author(s)
 * 
 * This file is part of Kommando
 * 
 * Kommando is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Kommando is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Kommando.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kommando.skin;

import java.awt.Window;

import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFrame;

import org.kommando.core.KommandoWindow;
import org.kommando.ui.DraggableWindow;

/**
 * @author Peter De Bruycker
 * 
 */
public abstract class DialogBasedKommandoWindow implements KommandoWindow {

    private JDialog dialog;

    @Override
    public void dispose() {
        if (dialog != null) {
            dialog.dispose();

            dialog = null;
        }
    }

    @Override
    public Window getWindowControl() {
        if (dialog == null) {
            dialog = createDialog();
        }

        return dialog;
    }

    @Override
    public boolean isVisible() {
        return dialog != null && dialog.isVisible();
    }

    @Override
    public void hide() {
        if (dialog != null) {
            dialog.setVisible(false);
        }
    }

    @Override
    public void show() {
        if (dialog == null) {
            dialog = createDialog();
        }

        dialog.setVisible(true);
        dialog.toFront();
        dialog.requestFocusInWindow();
    }

    protected JDialog createDialog() {
        JDialog dialog = new JDialog((JFrame) null);
        dialog.setUndecorated(true);

        JComponent dialogContent = createDialogContent();
        if (dialogContent == null) {
            throw new IllegalStateException("createDialogContent method cannot return null");
        }

        dialog.add(dialogContent);
        dialog.pack();
        dialog.setLocationRelativeTo(null);

        DraggableWindow.install(dialog);

        return dialog;
    }

    protected abstract JComponent createDialogContent();
}
